It's back up for me and a number of others. Have you tried power cycling your modem?
Yeah, repeatedly... Mine was one of the last ones to come back during the previous outage too... I'll give it 'til morning then hit the direct forum. Thank goodness for having a backup connection (hurrah for working for an ISP that does DSL!)
If it's a DCM475, try a factory reset (usually a paperclip on a reset button). Strangely that worked for me.